Fluttershy shares with you that she has a rod. You still find her attractive and the two of you start a relationship. After hearing about how loving and open you are, Fluttershy's friends ask her if she'd be willing to share you. She says yes.
The pegasus smiles at her before she starts raising her shirt. When her breasts are exposed, her rod springs out from between her tits and bops AJ on the nose.
*boop!*